[spartango]

The SA-11 'Buk' TELAR (9A310M1) was indeed designed to be used as part of a broader system including C&C, dedicated launchers, and the 9S18M1 radar. It certainly requires trained personnel to operate.

With that said, the Buk was also designed to surpass its predecessor('Kub') by incorporating a fire control radar into each launcher (TELAR vs TEL), so that it could operate with some autonomy. The original idea was to allow the whole SAM network to track multiple targets independent of the 9S18M1 radar, which would focus on detection and delegation.

This capability also enables an autonomous TELAR unit (as the various images and videos are showing) to target an aircraft at a range of 3-32km, much as people are hypothesizing happened to MH17. It is plausible, although far from certain.

http://fas.org/man/dod-101/sys/missile/row/sa-11.htm